1.7. Post-installation Script

You have the option of adding commands to run on the system once the
installation is complete. This section must be at the end of the
kickstart file and must start with the %post
command. This section is useful for functions such as installing
additional software and configuring an additional nameserver.

Note

If you configured the network with static IP information, including
a nameserver, you can access the network and resolve IP addresses in
the %post section. If you configured the network
for DHCP, the /etc/resolv.conf file has not
been completed when the installation executes the
%post section. You can access the network,
but you can not resolve IP addresses. Thus, if you are using DHCP,
you must specify IP addresses in the %post
section.

Note

The post-install script is run in a chroot environment; therefore,
performing tasks such as copying scripts or RPMs from the
installation media do not work.

--nochroot

Allows you to specify commands that you would like to run
outside of the chroot environment.

The following example copies the file
/etc/resolv.conf to the file system that was
just installed.

%post --nochroot
cp /etc/resolv.conf /mnt/sysimage/etc/resolv.conf

--interpreter /usr/bin/python

Allows you to specify a different scripting language, such as
Python. Replace /usr/bin/python with the
scripting language of your choice.